Waiting to be connected (2,4)
I believe the answer is:
on hold
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">waiting to be connected</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for on hold that I've seen before include "Waiting for connection (telephone)" , "waiting for reply" , "not through yet?" , "In abeyance" , "Postoned, or awaiting reply to phone call" .)